The Toothlock combines Sog's high performance piston lock but with the addition of a kick start device. Pull back the lock and the blade is nudged out of the handle to start its journey. Why the name the Toothlock? Check out the shape of the lock bar with its two lobe geometry. This new technology merges with an assertive handle pattern that changes direction to match the tactile points on the hand. You will find it stimulating. The blade shape is novel as well with a wavy reverse curve that cuts effortlessly while maintaining a thick reinforced tip for power penetration. The VG-10 blade is ground to perfection and is reminiscent of ancient samurai designs.